ENVIRONMENT.md says it is "generated from source by scanning every
getenv() site", but it had drifted far behind the code. Reconciling the
doc against the C sources (the MAINTAINING-DOCS.md procedure) found 34
engine env vars read by the code but undocumented, and nothing stale.
Added (defaults/effects taken from source, per the maintenance rules -
nothing invented):
Performance/tuning (11): COLI_NUMA, PILOT_TWO, COUPLE/COUPLE_K/COUPLE_D,
ROUTE_TRACE, COLI_NO_FUSED_PAIR, DISK_SPLIT, I4S, SPEC_PIN,
COLI_RAM_OVERCOMMIT
CUDA (16): COLI_CUDA_ATTN_SHARD, COLI_CUDA_PIPE/_PIPE_SHARD/_PIPE_S_MIN,
COLI_CUDA_MTP, COLI_CUDA_ASYNC, COLI_CUDA_DUAL_PROJ, COLI_CUDA_W4_PACKED,
COLI_CUDA_TC_INT4/_TC_MIN_ROWS/_TC_W4A16/_TC_W4A16_MIN,
COLI_CUDA_SHARED_W4A16/_SHARED_W4A16_MIN_ROWS, COLI_METAL_UNTRACKED
Advanced/debug (7): SCHEMA, EXPERT_BUDGET/_EXPERIMENTAL, TOKENS,
SCORE_PREFIX, REPIN_VERBOSE, PPL (olmoe-only), COLI_PROMPT (CLI section)
Also bumped the "Generated from" line to dev @ d5327e2 and noted the scan
now covers olmoe.c, backend_cuda.cu, backend_metal.mm (not just glm.c).
Verified: the code-vs-doc diff is now empty - all 111 distinct C env vars
are documented. The reverse diff (doc vars not in C code) is 14 entries,
all legitimate: 11 Python-side vars correctly in the Server/CLI section,
plus 3 prose constants (IOSQE_ASYNC, O_DIRECT, the VAR format word).
woolcoxm
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